Gaya APA
Direct mail design. (1963).
New York:
Reinhola Publishing Corporation.
Gaya Chicago
Direct mail design.
.
New York:
Reinhola Publishing Corporation,
1963.
Buku.
Gaya MLA
Direct mail design.
.
New York:
Reinhola Publishing Corporation,
1963.
Buku.
Gaya Turabian
Direct mail design.
New York:
Reinhola Publishing Corporation,
1963.
Buku.